Wall Injection Myths — Holes, Mess, and Settling
What actually happens during cavity fill, how we verify fill quality, and when injection is the wrong tool.
Wall injection is not “spray foam in every wall” — it’s drill-and-fill: dense-packed insulation blown into the cavity through small ports. (We don’t install spray foam; when a cavity genuinely calls for foam, we refer you to a specialist.) Myth one: you will have hundreds of giant holes — ports are small and sequenced to minimize patchwork. Myth two: insulation will fix mold — moisture problems get diagnosed first.
We verify injectability with borescope checks where helpful and stop when framing or sheathing says no. A good no is cheaper than a bad yes.